x.25分组头用于网络控制时,其长度随分组类型不同而有所不同,但至少包含前 (107 发布时间:2017-02-05 19:56 │ 来源:www.tikuol.com 题型:单项选择题 问题: x.25分组头用于网络控制时,其长度随分组类型不同而有所不同,但至少包含前 (107) 。A) 三个 B) 四个 C) 五个 D) 八个
题型:单项选择题 So sudden ________that the enemy had no time to escape. A.did the attackB.the attack didC.was the attackD.the attack was 查看答案
题型:单项选择题 We had wanted to finish our task by noon,but it didn’t quite _____ as planned.A.find out B.work outC.hand outD.give out 查看答案